I've also been taking a bit of a closer look at some of the books my students have been reading. It's hard for me when a couple of my students always choose the Wimpy Kid books for independent reading time, but I've always truly felt that if students are genuinely reading, and are motivated by those texts, then they are still reading, so I tend not to coach too much. Through shared reading experiences, book recommendations, and other exposures to good literature, I know I need to trust in the process. Just the other day, one of my Wimpy Kid "regulars" picked up a new book from the library. I was no doubt thrilled, as this is literally the first time I've seen him choose anything other than that to read (Side note: I don't have anything against this series; I just want to provide a rich reading experience for my students, and reading that series throughout the year won't give that to them).
Thinking on this, I realize that what I do every day in the classroom is powerful in helping these students to see, day by day, the power of a variety of texts by different authors in different genres. They may not choose new books, or read widely in different authors right away, but as they are exposed to it in different ways, over time, perhaps they will. Perhaps a friend will recommend a new book to them. Perhaps a librarian can entice them with a different book. Perhaps a parent will share great titles, or show them books they have read in the past.
I never know exactly what will guide my students toward richer reading experiences, but if I trust in the process, I can be reassured that it is the right path. If I am exposing them to great titles, reading aloud every day, promoting the love of reading with daily independent reading, guiding success by setting goals, setting expectations for books, and generally setting the tone of reading being an amazing thing that changes lives, then I am on the right path.
Trust the process.